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Title: Spin-polarized photoelectrons from half-filled-shell atoms

Abstract

A spin-polarized beam of photoelectrons of significant intensity from a closed ns{sup 2}-subshell of a spin-aligned atom having a multielectron half-filled subshell in its ground state is predicted. The polarization results from the specific properties of a half-filled shell atom due to the unbalanced exchange interaction between spin-up and spin-down electrons in the atom, both at the independent-particle and multielectron correlation levels. This mechanism causing the preferable spin orientation of outgoing photoelectrons differs from the commonly known mechanisms yielding spin-polarized photoelectrons from atoms. Calculated results for the photoionization of the valence 4s{sup 2} subshell of a spin-up oriented Mn(4s{sup 2} {sup 6}S) atom employing spin-polarized Hartree-Fock and random-phase approximation with exchange are presented, but the results are inherent properties of any half-filled subshell atom. The importance of electron correlation effects is emphasized.

Authors:
 [1];  [2]
  1. Department of Physics and Earth Science, University of North Alabama, Florence, Alabama 35632 (United States)
  2. Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303 (United States)
Publication Date:
OSTI Identifier:
20982115
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.75.022701; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; BEAMS; ELECTRON CORRELATION; ELECTRONIC STRUCTURE; ELECTRONS; EXCHANGE INTERACTIONS; GROUND STATES; HARTREE-FOCK METHOD; INNER-SHELL IONIZATION; MANGANESE; PARTICLES; PHOTOIONIZATION; PHOTON-ATOM COLLISIONS; POLARIZATION; RANDOM PHASE APPROXIMATION; SPIN; SPIN ORIENTATION; VALENCE

Citation Formats

Dolmatov, V. K., and Manson, S. T. Spin-polarized photoelectrons from half-filled-shell atoms. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.022701.
Dolmatov, V. K., & Manson, S. T. Spin-polarized photoelectrons from half-filled-shell atoms. United States. doi:10.1103/PHYSREVA.75.022701.
Dolmatov, V. K., and Manson, S. T. Thu . "Spin-polarized photoelectrons from half-filled-shell atoms". United States. doi:10.1103/PHYSREVA.75.022701.
@article{osti_20982115,
title = {Spin-polarized photoelectrons from half-filled-shell atoms},
author = {Dolmatov, V. K. and Manson, S. T.},
abstractNote = {A spin-polarized beam of photoelectrons of significant intensity from a closed ns{sup 2}-subshell of a spin-aligned atom having a multielectron half-filled subshell in its ground state is predicted. The polarization results from the specific properties of a half-filled shell atom due to the unbalanced exchange interaction between spin-up and spin-down electrons in the atom, both at the independent-particle and multielectron correlation levels. This mechanism causing the preferable spin orientation of outgoing photoelectrons differs from the commonly known mechanisms yielding spin-polarized photoelectrons from atoms. Calculated results for the photoionization of the valence 4s{sup 2} subshell of a spin-up oriented Mn(4s{sup 2} {sup 6}S) atom employing spin-polarized Hartree-Fock and random-phase approximation with exchange are presented, but the results are inherent properties of any half-filled subshell atom. The importance of electron correlation effects is emphasized.},
doi = {10.1103/PHYSREVA.75.022701},
journal = {Physical Review. A},
number = 2,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}